They're just made up (makeup, dress, hairstyle) to look that way. Most men like young girls and have psychological buttons to be pushed thanks to their sexual maturation in their teen years and the things they associate with high sexuality, but I'm always a little creeped out with these videos that use cues of dress, styling, room decor (and in this case the dude coming in with a teddy bear around his dick) clearly trying for something quite a bit under the "barely legal" theme.